640 imperial cups in US quarts

Conversion formula
How to convert 640 imperial cups to US quarts?

We know (by definition) that: $1\mathrm{brcup}\approx 0.300237481376214\mathrm{usquart}$

We can set up a proportion to solve for the number of US quarts.

Now, we cross multiply to solve for our unknown $x$:

Conclusion: 640 ⁢ brcup ≈ 192.15198808077696 ⁢ usquart

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US quart is equal to 0.00520421365393118 times 640 imperial cups.

It can also be expressed as: 640 imperial cups is equal to $\frac{1}{\mathrm{0.00520421365393118}}$ US quarts.

Approximation

An approximate numerical result would be: six hundred and forty imperial cups is about one hundred and ninety-two point one five US quarts, or alternatively, a US quart is about zero point zero one times six hundred and forty imperial cups.